vdr: fix build w/glibc-2.31

https://hydra.nixos.org/build/122891193

pkgs/applications/video/vdr/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, fontconfig, libjpeg, libcap, freetype, fribidi, pkgconfig
-, gettext, systemd, perl, lib
+, gettext, systemd, perl, lib, fetchpatch
 , enableSystemd ? true
 , enableBidi ? true
 }: stdenv.mkDerivation rec {
@@ -12,6 +12,11 @@
     sha256 = "1p51b14aqzncx3xpfg0rjplc48pg7520035i5p6r5zzkqhszihr5";
   };
 
+  patches = [
+    # Derived from http://git.tvdr.de/?p=vdr.git;a=commit;h=930c2cd2eb8947413e88404fa94c66e4e1db5ad6
+    ./glibc2.31-compat.patch
+  ];
+
   enableParallelBuilding = true;
 
   postPatch = "substituteInPlace Makefile --replace libsystemd-daemon libsystemd";

pkgs/applications/video/vdr/glibc2.31-compat.patch

@@ -0,0 +1,15 @@
+diff --git a/eit.c b/eit.c
+index 50d8229..373dbca 100644
+--- a/eit.c
++++ b/eit.c
+@@ -391,7 +391,9 @@ cTDT::cTDT(const u_char *Data)
+   if (abs(diff) > MAX_TIME_DIFF) {
+      mutex.Lock();
+      if (abs(diff) > MAX_ADJ_DIFF) {
+-        if (stime(&dvbtim) == 0)
++        timespec ts = { 0 };
++        ts.tv_sec = dvbtim;
++        if (clock_settime(CLOCK_REALTIME, &ts) == 0)
+            isyslog("system time changed from %s (%ld) to %s (%ld)", *TimeToString(loctim), loctim, *TimeToString(dvbtim), dvbtim);
+         else
+            esyslog("ERROR while setting system time: %m");